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https://issues.apache.org/jira/browse/FLINK-29364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17641770#comment-17641770
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Lijie Wang commented on FLINK-29364:
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I will close this ticket because it doesn't seem to exist and the reporter is
no longer active. Feel free to reopen it if any further question.
> Root cause of Exceptions thrown in the SourceReader start() method gets
> "swallowed".
> ------------------------------------------------------------------------------------
>
> Key: FLINK-29364
> URL: https://issues.apache.org/jira/browse/FLINK-29364
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Task
> Affects Versions: 1.15.3
> Reporter: Alexander Fedulov
> Priority: Major
>
> If an exception is thrown in the {_}SourceReader{_}'s _start()_ method, its
> root cause does not get captured.
> The details are still available here:
> [Task.java#L758|https://github.com/apache/flink/blob/bccecc23067eb7f18e20bade814be73393401be5/flink-runtime/src/main/java/org/apache/flink/runtime/taskmanager/Task.java#L758]
> But the execution falls through to
> [Task.java#L780|https://github.com/apache/flink/blob/bccecc23067eb7f18e20bade814be73393401be5/flink-runtime/src/main/java/org/apache/flink/runtime/taskmanager/Task.java#L780]
> and discards the root cause of
> canceling the source invokable without recording the actual reason.
>
> Hot to reproduce:
> [DataGeneratorSourceITCase.java#L117|https://github.com/afedulov/flink/blob/3df7669fcc6ba08c5147195b80cc97ac1481ec8c/flink-tests/src/test/java/org/apache/flink/api/connector/source/lib/DataGeneratorSourceITCase.java#L117]
>
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